火閃電,圓周!!!

2007-12-13 9:33 pm
一個圓形直徑8.5cm長,(派)=3.14,我要圓周!!!

回答 (5)

2007-12-14 1:05 am
✔ 最佳答案
圓周=直徑×派

圓形面積=半徑×半徑×派

8.5×3.14=26.69 cm
2007-12-14 12:44 am
派×直徑=圓周;
派=3.14or7分之22
∴5.8×3.14(7分之22)
=26.69(平方厘米)
2007-12-13 11:26 pm
=2(pie)r
=2(3.14)(8.5)cm
=53.83cm

2007-12-13 15:28:38 補充:
sorry,=8.5(3.14)cm=26.69cm
2007-12-13 10:23 pm
圓周 = 直徑x派
=8.5x3.14
=26.69 cm
參考: me
2007-12-13 10:02 pm
圓周 = (直徑)(派) = (8.5)(3.14) = 26.69 cm


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